The scale insects that threaten the pears, such as Pear clams, Japanese wax clams, and K. grandis, have hard shells or wax powder, and the pesticides are difficult to penetrate and adhere to. The control is very difficult and should be based on the law of its occurrence. , timely and sophisticated management. 1, do a good job of artificial control. In conjunction with winter pruning, cut out severed branches of the beetles, burn them together or brush off the scale insects on the branches with a hard brush. 2, pay attention to biological control. The protection and utilization of natural enemies such as ladybugs and parasites can effectively inhibit the occurrence of large areas of scale insects, but care should be taken to avoid the widespread use of broad-spectrum insecticides during the occurrence of natural enemies. 3, overwintering insects sprayed during the flood control period. Flower bud germination period is the best time to control scale insects. At this time, fruit trees have not sprouted and blossomed. The scope of pesticide selection is large. When the scale insects are damaged, they can be controlled by penetrating the 800 times rapid penetration liquid and can receive. Very good control effect. 4, nymphs incubation period of drug control. At this point, it is the best time for the drug to control the scale insects. The liquid medicine can enter the shell to kill the insect body inside the shell, and can also reach the crawling larvae and kill it. When the young larvae were found to hatch, they were immediately treated with medication. Commonly used agents are 20% speed killing 1500-2000 times, 2.5% deltamethrin 1500-2000 times, 80% dichlorvos 1000-1500 times, and 10% cypermethrin 1500-2000 times.
Foot and leg massager
Foot and leg massager
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